#include <bits/stdc++.h>
using namespace std;
const long long INF = 1e18;
long long a[200005];
set <pair <long long, long long>> choices;
long long l[200005], r[200005];
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
long long n; cin >> n;
a[0] = a[n + 1] = -INF;
for (long long i = 1; i <= n; i++){
cin >> a[i]; l[i] = i - 1; r[i] = i + 1;
choices.insert(make_pair(-a[i], i));
}
long long ans = 0;
for (long long c = 0; c < (n + 1) / 2; c++){
pair <long long, long long> mx = *choices.begin();
choices.erase(choices.begin());
ans -= mx.first;
long long id = mx.second, lf = l[id], rg = r[id];
if (lf) choices.erase(make_pair(-a[lf], lf));
if (rg <= n) choices.erase(make_pair(-a[rg], rg));
if (lf) l[id] = l[lf];
else l[id] = 0;
if (rg <= n) r[id] = r[rg];
else r[id] = n + 1;
if (l[id]) r[l[id]] = id;
if (r[id] <= n) l[r[id]] = id;
a[id] = a[lf] + a[rg] - a[id];
choices.insert(make_pair(-a[id], id));
cout << ans << "\n";
}
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
492 KB |
Output is correct |
| 2 |
Correct |
2 ms |
640 KB |
Output is correct |
| 3 |
Correct |
2 ms |
620 KB |
Output is correct |
| 4 |
Correct |
2 ms |
620 KB |
Output is correct |
| 5 |
Correct |
2 ms |
620 KB |
Output is correct |
| 6 |
Correct |
2 ms |
620 KB |
Output is correct |
| 7 |
Correct |
2 ms |
620 KB |
Output is correct |
| 8 |
Correct |
2 ms |
680 KB |
Output is correct |
| 9 |
Correct |
2 ms |
620 KB |
Output is correct |
| 10 |
Correct |
2 ms |
620 KB |
Output is correct |
| 11 |
Correct |
3 ms |
620 KB |
Output is correct |
| 12 |
Correct |
2 ms |
620 KB |
Output is correct |
| 13 |
Correct |
2 ms |
620 KB |
Output is correct |
| 14 |
Correct |
3 ms |
640 KB |
Output is correct |
| 15 |
Correct |
2 ms |
620 KB |
Output is correct |
| 16 |
Correct |
2 ms |
620 KB |
Output is correct |
| 17 |
Correct |
2 ms |
620 KB |
Output is correct |
| 18 |
Correct |
2 ms |
640 KB |
Output is correct |
| 19 |
Correct |
2 ms |
620 KB |
Output is correct |
| 20 |
Correct |
2 ms |
620 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
492 KB |
Output is correct |
| 2 |
Correct |
2 ms |
640 KB |
Output is correct |
| 3 |
Correct |
2 ms |
620 KB |
Output is correct |
| 4 |
Correct |
2 ms |
620 KB |
Output is correct |
| 5 |
Correct |
2 ms |
620 KB |
Output is correct |
| 6 |
Correct |
2 ms |
620 KB |
Output is correct |
| 7 |
Correct |
2 ms |
620 KB |
Output is correct |
| 8 |
Correct |
2 ms |
680 KB |
Output is correct |
| 9 |
Correct |
2 ms |
620 KB |
Output is correct |
| 10 |
Correct |
2 ms |
620 KB |
Output is correct |
| 11 |
Correct |
3 ms |
620 KB |
Output is correct |
| 12 |
Correct |
2 ms |
620 KB |
Output is correct |
| 13 |
Correct |
2 ms |
620 KB |
Output is correct |
| 14 |
Correct |
3 ms |
640 KB |
Output is correct |
| 15 |
Correct |
2 ms |
620 KB |
Output is correct |
| 16 |
Correct |
2 ms |
620 KB |
Output is correct |
| 17 |
Correct |
2 ms |
620 KB |
Output is correct |
| 18 |
Correct |
2 ms |
640 KB |
Output is correct |
| 19 |
Correct |
2 ms |
620 KB |
Output is correct |
| 20 |
Correct |
2 ms |
620 KB |
Output is correct |
| 21 |
Correct |
447 ms |
21192 KB |
Output is correct |
| 22 |
Correct |
428 ms |
21100 KB |
Output is correct |
| 23 |
Correct |
421 ms |
21228 KB |
Output is correct |
| 24 |
Correct |
167 ms |
20844 KB |
Output is correct |
| 25 |
Correct |
157 ms |
20972 KB |
Output is correct |
| 26 |
Correct |
150 ms |
20844 KB |
Output is correct |
| 27 |
Correct |
199 ms |
20972 KB |
Output is correct |
| 28 |
Correct |
170 ms |
21100 KB |
Output is correct |
| 29 |
Correct |
197 ms |
20972 KB |
Output is correct |
| 30 |
Correct |
177 ms |
20972 KB |
Output is correct |
| 31 |
Correct |
183 ms |
20972 KB |
Output is correct |
| 32 |
Correct |
198 ms |
21120 KB |
Output is correct |
| 33 |
Correct |
282 ms |
20844 KB |
Output is correct |
| 34 |
Correct |
284 ms |
20844 KB |
Output is correct |
| 35 |
Correct |
275 ms |
20844 KB |
Output is correct |
| 36 |
Correct |
419 ms |
20972 KB |
Output is correct |
| 37 |
Correct |
431 ms |
21228 KB |
Output is correct |
| 38 |
Correct |
492 ms |
21100 KB |
Output is correct |
| 39 |
Correct |
152 ms |
20844 KB |
Output is correct |
| 40 |
Correct |
194 ms |
20844 KB |
Output is correct |
| 41 |
Correct |
162 ms |
20856 KB |
Output is correct |
| 42 |
Correct |
167 ms |
21100 KB |
Output is correct |
| 43 |
Correct |
170 ms |
21100 KB |
Output is correct |
| 44 |
Correct |
166 ms |
21100 KB |
Output is correct |
| 45 |
Correct |
181 ms |
20972 KB |
Output is correct |
| 46 |
Correct |
182 ms |
20976 KB |
Output is correct |
| 47 |
Correct |
203 ms |
21100 KB |
Output is correct |
| 48 |
Correct |
272 ms |
20844 KB |
Output is correct |
| 49 |
Correct |
287 ms |
20844 KB |
Output is correct |
| 50 |
Correct |
270 ms |
20844 KB |
Output is correct |
